I’m not sure how “private” it is as she said guests paid money and came from a long ways away. It sounds like they were members of their Organic Farm club or whatever.
Not that it excuses the food Nazis. I suppose that might apply to the next Men’s breakfast at church - although that only has a “Donations” jar.
BTW - those vegetables in the bucket look amazing!
Granted, as you say: a jar or other container of some type labeled 'Donations' would have provided compelling evidence later on as well.